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opusenc: add apply_phase_inv option 

By popular request.
Does the same as in libopusenc.
This commit is contained in:
Lynne 2020-05-25 14:41:33 +01:00
parent c0344cbfb0
commit 2502e13b07
No known key found for this signature in database
GPG Key ID: A2FEA5F03F034464
3 changed files with 4 additions and 2 deletions
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2
libavcodec/opus_pvq.c
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@ -627,7 +627,7 @@ static av_always_inline uint32_t quant_band_template(CeltPVQ *pvq, CeltFrame *f,
}
} else if (stereo) {
if (quant) {
inv = itheta > 8192;
inv = f->apply_phase_inv ? itheta > 8192 : 0;
if (inv) {
for (i = 0; i < N; i++)
Y[i] *= -1;

3
libavcodec/opusenc.c
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@ -691,7 +691,7 @@ static av_cold int opus_encode_init(AVCodecContext *avctx)
s->frame[i].avctx = s->avctx;
s->frame[i].seed = 0;
s->frame[i].pvq = s->pvq;
s->frame[i].apply_phase_inv = 1;
s->frame[i].apply_phase_inv = s->options.apply_phase_inv;
s->frame[i].block[0].emph_coeff = s->frame[i].block[1].emph_coeff = 0.0f;
}
@ -701,6 +701,7 @@ static av_cold int opus_encode_init(AVCodecContext *avctx)
#define OPUSENC_FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
static const AVOption opusenc_options[] = {
{ "opus_delay", "Maximum delay in milliseconds", offsetof(OpusEncContext, options.max_delay_ms), AV_OPT_TYPE_FLOAT, { .dbl = OPUS_MAX_LOOKAHEAD }, 2.5f, OPUS_MAX_LOOKAHEAD, OPUSENC_FLAGS, "max_delay_ms" },
{ "apply_phase_inv", "Apply intensity stereo phase inversion", offsetof(OpusEncContext, options.apply_phase_inv), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, OPUSENC_FLAGS, "apply_phase_inv" },
{ NULL },
};

1
libavcodec/opusenc.h
View File

@ -42,6 +42,7 @@
typedef struct OpusEncOptions {
float max_delay_ms;
int apply_phase_inv;
} OpusEncOptions;
typedef struct OpusPacketInfo {